MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 43d7b3a707ca34f0a9f1f5b8c5f07ceb64f225567aa0db7f4cfdcbe7253a93a8. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


AsyncRAT


Vendor detections: 10


Intelligence 10 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 43d7b3a707ca34f0a9f1f5b8c5f07ceb64f225567aa0db7f4cfdcbe7253a93a8
SHA3-384 hash: 437e3b8fe9edc003d28c3c986a5d72bea4af5f82a4bb2990bf854355e37f4ea533b70fc6cf15d1ef8ec88b7dc9147a2a
SHA1 hash: 1c4cd88b85e7d7c6340f0e700c14771ffc1e860e
MD5 hash: 7b2955fceb50c1e7bbaa41b9761bbaba
humanhash: michigan-quiet-nine-river
File name:Xeron_Scan2312202007112.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:811'520 bytes
First seen:2020-12-23 18:59:32 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:qEPa6XhZQ6mdLmMnCyHIcSbB3DgBDIBx64qp4G6ywgWmSzykiCBelLyDsx4TQZ/G:qEPa6X
Threatray 527 similar samples on MalwareBazaar
TLSH 6A053B02498268CBD7A2D494A3CE82D67387958CE7AA7FD4FE10E21531DC467EFB8D41
Reporter abuse_ch
Tags:AsyncRAT exe FedEx RAT


Avatar
abuse_ch
Malspam distributing AsyncRAT:

HELO: s1008.xrea.com
Sending IP: 150.95.9.228
From: FedEx <no-reply@fedex.com>
Subject: Delayed Parcel Delivery
Attachment: Xeron_Scan2312202007112.gz (contains "Xeron_Scan2312202007112.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
577
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Xeron_Scan2312202007112.exe
Verdict:
Malicious activity
Analysis date:
2020-12-23 19:00:50 UTC
Tags:
trojan rat asyncrat
Link:
https://app.any.run/tasks/e79261ae-023f-44a0-84d7-c72f3bc218f2

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/109223/
Detection(s):
SecuriteInfo.com.Trojan.DownLoader36.30385.379.20957.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Unauthorized injection to a recently created process
Creating a file
DNS request
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Sending a UDP request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Enabling autorun
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/569387
Signature
.NET source code contains very large strings
Creates an undocumented autostart registry key
Creates autostart registry keys with suspicious names
Creates multiple autostart registry keys
Drops PE files to the startup folder
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Yara detected AsyncRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 333754 Sample: Xeron_Scan2312202007112.exe Startdate: 23/12/2020 Architecture: WINDOWS Score: 100 39 Multi AV Scanner detection for domain / URL 2->39 41 Multi AV Scanner detection for dropped file 2->41 43 Multi AV Scanner detection for submitted file 2->43 45 6 other signatures 2->45 6 Xeron_Scan2312202007112.exe 3 5 2->6         started        10 Xeron_Scan2312202007112.exe 2->10         started        12 Xeron_Scan2312202007112.exe 2->12         started        14 3 other processes 2->14 process3 file4 31 C:\Users\user\...\Xeron_Scan2312202007112.exe, PE32 6->31 dropped 33 Xeron_Scan23122020...exe:Zone.Identifier, ASCII 6->33 dropped 35 C:\Users\...\Xeron_Scan2312202007112.exe.log, ASCII 6->35 dropped 47 Creates an undocumented autostart registry key 6->47 49 Drops PE files to the startup folder 6->49 16 Xeron_Scan2312202007112.exe 2 6->16         started        51 Creates autostart registry keys with suspicious names 10->51 53 Creates multiple autostart registry keys 10->53 19 Xeron_Scan2312202007112.exe 10->19         started        21 Xeron_Scan2312202007112.exe 12->21         started        23 Xeron_Scan2312202007112.exe 12->23         started        25 Xeron_Scan2312202007112.exe 2 14->25         started        27 Xeron_Scan2312202007112.exe 2 14->27         started        29 Xeron_Scan2312202007112.exe 2 14->29         started        signatures5 process6 dnsIp7 37 severdops.ddns.net 103.99.1.128, 49720, 6204 VNPT-AS-VNVIETNAMPOSTSANDTELECOMMUNICATIONSGROUPVN Viet Nam 16->37
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/43d7b3a707ca34f0a9f1f5b8c5f07ceb64f225567aa0db7f4cfdcbe7253a93a8/
Threat name:
Win32.Backdoor.Crysan
Create hunting rule
Status:
Malicious
First seen:
2020-12-23 17:29:41 UTC
AV detection:
24 of 48 (50.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ipl3hjyhzi2pbkpr6w4ml4d45nspejkwpkqnw72m7xf6ojj2soua._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Similar samples:
0a9e7542b65b3a7c5e1a11a2b23c2366fd53bff3205bb9d1656d4e32d1f0068b
AsyncRAT
2c8c5c5e5990da4a2af218cfece6afda3f4830be6605b9767adbfbde2e5cd276
AsyncRAT
395fdb688d7d8085e2636fb26e7e4d5004ae3ec20db26edeee1e0a19d5872e07
AsyncRAT
65c205b93cf9c6d9e9acd5336e010a43309688bfc2e28cffbb5ba8973757fd49
AsyncRAT
68bf0a42854ac13fe13a75bb213f51934a3edc0fa7a0732ddb12a68699619474
AsyncRAT
6cd4d8d927aa670081be1d6280e5f91a171f1c7023fa567d2bb8e9a83387af29
AsyncRAT
867eb496d9f6122024560c00e0a2fde238fed90558dd0b4b838047c8eed8196c
AsyncRAT
8dd3b9fb0158903433d23f879d07820b8110a4b6417f3deda72342c2f698384e
AsyncRAT
c853a4beac9f6fcea2bb9ad13b17eafd6605cac76899edbecd88d4f981d9f432
AsyncRAT
fc926b2871dc293ad75ff0caf3863adc75b9342a34c1965c3991f512a2f666c8
AsyncRAT
+ 517 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat persistence rat
Link:
https://tria.ge/reports/201223-dhnz8tglaj/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetThreadContext
Adds Run key to start application
Drops startup file
Async RAT payload
AsyncRat
Modifies WinLogon for persistence
Malware Config
C2 Extraction:
severdops.ddns.net:6204
Unpacked files
SH256 hash:
5711d8afdc6abf61df0ff50c1bea09de03166d9d2980a1439c2ea7c5a13e4ec9
MD5 hash:
812a0b631284911640afe68b5777066a
SHA1 hash:
382e36ca70528e9c24b4dd6e7a81594ebf6583fe
Link:
https://www.unpac.me/results/ea279b8e-6c7a-45ed-8bf2-7ab156d6b2ef/
SH256 hash:
3f7047dc637a6911af352d18b33255b38dfc27ec28619042abcae765bef63023
MD5 hash:
7880a8c2dc8b7f81f872da35aecf0a70
SHA1 hash:
65857250ca0a90810b3559cb03391059180fa1c8
Detections:
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/ea279b8e-6c7a-45ed-8bf2-7ab156d6b2ef/
SH256 hash:
43d7b3a707ca34f0a9f1f5b8c5f07ceb64f225567aa0db7f4cfdcbe7253a93a8
MD5 hash:
7b2955fceb50c1e7bbaa41b9761bbaba
SHA1 hash:
1c4cd88b85e7d7c6340f0e700c14771ffc1e860e
Link:
https://www.unpac.me/results/ea279b8e-6c7a-45ed-8bf2-7ab156d6b2ef/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/43d7b3a707ca34f0a9f1f5b8c5f07ceb64f225567aa0db7f4cfdcbe7253a93a8

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:asyncrat
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research
Rule name:Reverse_text_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Reverse text detected
Rule name:win_asyncrat_j1
Create hunting rule
Author:Johannes Bader @viql
Description:detects AsyncRAT
Rule name:win_asyncrat_w0
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

AsyncRAT

zip 3a0257587568005f5a81b41f9ab66520d0dd4b987c6c2129fb9025fd51553eae

AsyncRAT

Executable exe 43d7b3a707ca34f0a9f1f5b8c5f07ceb64f225567aa0db7f4cfdcbe7253a93a8

(this sample)

  
Dropped by
MD5 a04e46989a10f139c6a9fab8d843fe9f
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/109223/
  
Dropped by
SHA256 3a0257587568005f5a81b41f9ab66520d0dd4b987c6c2129fb9025fd51553eae

Comments